Parties! The style, stars and scoop from Hollywood's hottest events

Penélope Cruz rounded up an A-list circle of friends—including Salma Hayek, Jessica Biel, Eva Longoria, Lindsay Lohan, Christian Slater, America Ferrera and Mary-Kate Olsen—to celebrate her partnership with Dolce & Gabbana at Hollywood’s famed Chateau Marmont hotel. The designers have donated four gowns worn by Cruz for an auction that will benefit the Art of Elysium, which recruits actors and musicians to help kids battling serious illnesses. To steal Penélope’s look, bid on one of her dresses on the Art of Elysium site.